21919984

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{607}}^1$

素因数の和:713

約数の個数: 40

約数和(自身を含む): 44405888

約数和(自身を除く): 22485904

約数列:

[1, 2, 4, 8, 16, 37, 61, 74, 122, 148, 244, 296, 488, 592, 607, 976, 1214, 2257, 2428, 4514, 4856, 9028, 9712, 18056, 22459, 36112, 37027, 44918, 74054, 89836, 148108, 179672, 296216, 359344, 592432, 1369999, 2739998, 5479996, 10959992, 21919984]

約数ペア:

[(1, 21919984), (2, 10959992), (4, 5479996), (8, 2739998), (16, 1369999), (37, 592432), (61, 359344), (74, 296216), (122, 179672), (148, 148108), (244, 89836), (296, 74054), (488, 44918), (592, 37027), (607, 36112), (976, 22459), (1214, 18056), (2257, 9712), (2428, 9028), (4514, 4856)]